| 介孔分子筛的制备及催化合成2-三氟甲氧基-5-硝基苯胺 |
| |
| 引用本文： | 奚立民,陈晓芳. 介孔分子筛的制备及催化合成2-三氟甲氧基-5-硝基苯胺[J]. 化学世界, 2009, 50(3) |
| |
| 作者姓名： | 奚立民 陈晓芳 |
| |
| 作者单位： | 台州职业技术学院,生物与化学工程系,浙江,台州,318000;台州职业技术学院,生物与化学工程系,浙江,台州,318000 |
| |
| 基金项目： | 浙江省科技计划重大项目 |
| |
| 摘 要： | 采用直接合成法制备出由MCM-41介孔分子筛负载SO3H的催化剂,测定了催化剂表面的酸中心组成,并考察了不同工艺条件下邻三氟甲氧基苯胺区域选择性硝化的催化性能。用硫酸钡重量法、TEM和N2吸附-脱附表征了MCM-41-SO3H的结构。结果表明,MCM-41-SO3H保持了MCM-41的介孔结构,BET表面积高达560 m2/g,表面含有质子酸中心;得到最佳的工艺条件:m(邻三氟甲氧基苯胺)/m(催化剂)=32,n(硝酸)/n(邻三氟甲氧基苯胺)=3.0,反应温度65°C,反应时间3 h,邻三氟甲氧基苯胺转化率为93.5%,2-三氟甲氧基-5-硝基苯胺含量达到84.2%。催化剂焙烧温度290°C,催化剂重复使用6次仍保持较高活性。
|
| 关 键 词： | MCM-41分子筛 磺酸 2-三氟甲氧基-5-硝基苯胺 区域选择性硝化 催化 |
Preparation of MCM-41-SO_3H and Catalytic Synthesis of 2-Trifluoromethoxy-5-nitroaniline |
| |
| XI Li-min,CHEN Xiao-fang. Preparation of MCM-41-SO_3H and Catalytic Synthesis of 2-Trifluoromethoxy-5-nitroaniline[J]. Chemical World, 2009, 50(3) |
| |
| Authors: | XI Li-min CHEN Xiao-fang |
| |
| Affiliation: | Departement of Biological and Chemical Engineering;Taizhou Technical College;Zhejiang Taizhou 318000;China |
| |
| Abstract: | Catalyst of sulfonic acid group supported on mesoporous MCM-41 was prepared by direct-synthesis method.The acid sites on catalyst surface were tested.The catalytic performance for o-trifluoromethoxyaniline regioselective nitration was investigated under various conditions.The structure of MCM-41-SO_3H was characterized by the gravimetry of BaSO_4,TEM and N_2 adsorption/desorption. The results showed that the mesoporous structure of MCM-41 was maintained in the MCM-41-SO_3H system.The catalyst had a high BET... |
| |
| Keywords: | MCM-41 molecular sieve sulfonic acid 2-trifluoromethoxy-5-nitroaniline regioselective nitration catalysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
